Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
in the different models.
The imperfect transfection model and the segregation model are omitted due to the lack of reliability of the estimates. In the other models, the best fit is obtained for 
. The entry parameters are included from the estimation of the entry parameters in [1]: 
for the basic model, 
for the proximity model and 
for the soft threshold model.
